.box {
    width: 480px;
    border: 1px solid #ccc;
    margin-left: auto;
    margin-right: auto;
    margin-top: 100px;
    padding: 30px 40px;
    box-shadow: 5px 5px 6px rgba(0, 0, 0, .3);
}

h2 {
    text-align:  center;
}

.user_login {
    float: right;
}

.form-group {
    position: relative;
    margin-bottom: 25px !important;
  }
  
.rule-check {
    position: absolute ;
    color: red !important;
}